Ta có: \(\frac85=1+\frac35;\frac{11}{8}=1+\frac38;\frac{16}{13}=\frac{13+3}{13}=1+\frac{3}{13}\)

\(\frac{14}{11}=\frac{11+3}{11}=1+\frac{3}{11};\frac{21}{18}=\frac{18+3}{18}=1+\frac{3}{18}\)

\(\frac52=\frac{2+3}{2}=1+\frac32\)

Ta có: 18>13>11>8>5>2

=>\(\frac{3}{18}<\frac{3}{13}<\frac{3}{11}<\frac38<\frac35<\frac32\)

=>\(\frac{3}{18}+1<\frac{3}{13}+1<\frac{3}{11}+1<\frac38+1<\frac35+1<\frac32+1\)

=>\(\frac{21}{18}<\frac{16}{13}<\frac{14}{11}<\frac{11}{8}<\frac85<\frac52\)

\(\dfrac{1}{3}< \dfrac{3}{5}< \dfrac{7}{9}< \dfrac{9}{11}< \dfrac{11}{13}\)

tk1/3; 3/5; 7/9; 9/11; 11/13

\(\frac{4}{6}=\frac{2}{3}\)

\(\frac{18}{27}=\frac{2}{3}\)

\(\Rightarrow\frac{4}{6}=\frac{18}{27}\)

\(\frac{12}{20}=\frac{3}{5}\)

\(\frac{22}{55}=\frac{2}{5}\)

\(\Rightarrow\frac{12}{20}>\frac{22}{55}\)

\(\frac{5}{6}=\frac{10}{12}\)

\(\Rightarrow\frac{5}{6}< \frac{11}{12}\)

Sắp xếp :

4;5;7;8;15;56

HT

\(\frac{4}{6}=\frac{2}{3}\)

\(\frac{18}{27}=\frac{2}{3}\)

\(\Rightarrow\frac{4}{6}=\frac{18}{27}\)

\(\frac{12}{20}=\frac{3}{5}\)

\(\frac{22}{55}=\frac{2}{5}\)

\(\Rightarrow\frac{12}{20}>\frac{22}{55}\)

\(\frac{5}{6}=\frac{10}{12}\)

\(\Rightarrow\frac{5}{6}< \frac{11}{12}\)

Sắp xếp:

4; 5; 7; 8; 15; 56.

_HT_

a) Theo thứ tự từ bé đến lớn: 38, 41, 59, 70.

b) Theo thứ tự từ lớn đến bé: 70, 59, 41, 38.

..../...../....../

sắp xếp từ bé đén lớn :

\(\frac{3}{4};\frac{5}{4};\frac{4}{3};\frac{5}{3}\)

tk mình nha mình kp vs bạn r đóa

a: -10/8<-1

-19/19=-1

-1<-2/10<0

0<5/12<1<17/15

=>17/15>1>5/12>-2/10>-19/19>-10/8

b: -1/3=-4/12; -5/12=-5/12; -3/4=-9/12; -1/4=-3/12; -7/12=-7/12

=>-3/4<-7/12<-5/12<-1/3<-1/4

Theo thứ tự từ lớn đến bé:\(\dfrac{17}{15};1;\dfrac{5}{12};0;\dfrac{2}{-10};-\dfrac{19}{19};-\dfrac{10}{8}\)

Theo thứ tự từ bé đến lớn : \(-\dfrac{3}{4};-\dfrac{7}{12};-\dfrac{5}{12};-\dfrac{1}{3};\dfrac{1}{-4}\)

a)  =>  9, 7, 5, 2

b)   =>1, 4, 6, 8

a, 9; 7; 5; 2

b, 1; 6; 4; 8